Brake



Jam. 93, i R s, ANP-@RD B97379494 BRAKE Filed Sept. 29. 1927 ATRNEYPatented Jan. 6, 1931 UNITED STATES PATENT oFFlcE ROY S. SANFORD, 0FSOUTH `BENI), INDIANA, ASSIGNOB T0 BENDIX BRAKE COMPANY, OF CHICAGO,ILLINOIS, .A CORPORATION 0F ILLINOIS BRAKE Application filed September29, 1927. Serial No. 222,722.

This invention relates to brakes and is illustrated as embodied in aninternal expanding brake for anrautomobile. An object of the inventionis to provide novel brake-operating means including anti-frictionrollers carried by the brake shoes or their equivalents and which arepreferably in the form of drawn steel stampings having substantiallycylindrical flanges for engagement with the cam or other applyingdevice, and, if desired. also having drawn cylindrical central flangesforming bearings to be mounted on a pivot member. I prefer'to arrangethe rollers in pairs on opposite sides of the web of the shoe and tooperate the shoe by a cam engaging. the pair of rollers and formed witha ri-b projecting between them to position the shoe laterally.

TheI above and other objects and featuresv 2 but showing a differentform of roller.

. In the arrangement illustrated th'e brake includes a rotatable drum1() at the open side of which is arranged a suitable support such as ahacking plate 12, and within which are arranged shoes 14 or equivalentfriction means Awhich are forced against the drum to apply the brake bymeans such as a cam acting against the resistance of a return' springl18. The particular brake illustrated in the drawing is substantially asmore fully described in Patent No. 1,567,716, granted Bendix BrakeCompany on December 29,

1925', on an application of A. Y. Dodge.

In the arrangement of Figures 1 and 2, cam 16 or its equivalent acts onrollers 20 carried by the ends of the shoes and which are prefera lyarranged in pairs, the cam 16 being protellated nut 28 on the end ofeach of the pivots l 26 confines the entire assembly in place.

The arrangement in Figure 3 is substan-l tially as described aboveexcept that the rollers 30, which correspond to the rollers 20, 'areformed with their central -flanges 32 turned in the op osite directionfrom the outer flanges. Tlie flanges 32 on each pair of rollers 30 thusform a bushing in the web of the shoe 14 through which the pivot 26passes.

While two illustrative embodiments have been described in detail, it isnot my intention to limit the scope of the invention to those particularembodiments or otherwise than by the terms of the appended claims.

I claim:

1. A brake shoe having an opening in one end thereof together with ananti-friction roller having a central tubular flange nested within saidopenin 2. A brake shoe having an opening in one end thereof togetherwith an anti-friction roller having a central tubular flange nestedsigned my name.

ROY S. SANFORD.

